Slate roofing is a tradition that honors true craftsmanship with the result of a lifetime roof.
These are roofs that are comprised of quarried stone mostly from the northeast. Vermont provides the majority of roofing slates that are produced in the US. These roofs are some of the most beautiful and oldest in the world. You can still find buildings that were built in the early 1800's, with their original slate roofs working in good order. A good slate roof will outlive you.
As a weathering material, roofing slates are recognized as the best. Since they are comprised of metamorphic rock, they are able to withstand some of the harshest environments. When installed properly slate roofs shed water easily, resist the degrading effects of the sun and are not affected by thermal expansion or thermal shock.
High winds probably have the most damaging effects on these roofs. Hurricane force winds can loosen the slates by a chattering action but their rigid characteristics and weight can prevent large amounts of damage to occur. Repairs are easily made in these cases and when properly done they are permanent for the roof.
Slate Roofing: These roofs are among the most expensive to install. The quarrying of the stone is a labor intensive process. The weight of the slates limit the quantities per load during shipping. The proper flashings, underlayments and attachment materials are quite costly themselves as well as the slow laborious
processes of the installation. So, when combining all of these factors together, you get an extremely expensive roof project that will last you for a lifetime.
When the costs for the slate roof alone are combined with the added construction costs for a structure that must be engineered to support the extreme weights that accompany slate roofing. It is easy to understand that these roofs are primarily seen on upscale homes and estates here in Florida.